springboot+springmvc+mybatis项目整合

介绍：

　　上篇给大家介绍了ssm多模块项目的搭建，在搭建过程中spring整合springmvc和mybatis时会有很多的东西需要我们进行配置，这样不仅浪费了时间，也比较容易出错，由于这样问题的产生，pivotal团队提供了一款全新的框架，该框架使用了特定的方式来进行配置，从而使开发人员不再需要定义样板化的配置。通过这种方式，spring boot致力于在蓬勃发展的快速应用开发领域(rapid application development)成为领导者。

特点:

1. 创建独立的spring应用程序
2. 嵌入的tomcat，无需部署war文件
3. 简化maven配置
4. 自动配置spring
5. 提供生产就绪型功能，如指标，健康检查和外部配置
6. 绝对没有代码生成和对xml没有要求配置
(以上大部分内容摘自百度百科)

 ok，关于springboot的讲解就到这里大家想了解的更详细可以自行百度。

搭建springboot项目我推荐大家用idea或者sts（spring tool suite spring公司自己研发的一款编辑器），我现在用的是idea，所以接下来我是用idea搭建项目的

 一、创建项目

填写完group和atrifact后点击下一步，这里我选择的是jar，因为官方文档推荐的是打包成jar，所以这里就不过多解释了。


这里勾选上web

这里勾选上mysql、jdbc和mybatis点击下一步

这里输入项目名和项目路径后点击完成

这是新建完成后的项目结构

 二、添加pom.xml依赖

因为springboot不推荐使用jsp做页面，如果想要使用就必需的添加jsp的依赖

 

<?xml version="1.0" encoding="utf-8"?>
<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
   xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelversion>4.0.0</modelversion>

 <groupid>com.chaoqi</groupid>
 <artifactid>springboot_demo2</artifactid>
 <version>0.0.1-snapshot</version>
 <packaging>jar</packaging>

 <name>springboot_demo2</name>
 <description>demo project for spring boot</description>

 <parent>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-parent</artifactid>
  <version>2.0.0.release</version>
  <relativepath/>
 </parent>

 <properties>
  <project.build.sourceencoding>utf-8</project.build.sourceencoding>
  <project.reporting.outputencoding>utf-8</project.reporting.outputencoding>
  <java.version>1.8</java.version>
 </properties>

 <dependencies>
  <dependency>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-jdbc</artifactid>
  </dependency>
  <dependency>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-web</artifactid>
  </dependency>
  <dependency>
   <groupid>org.mybatis.spring.boot</groupid>
   <artifactid>mybatis-spring-boot-starter</artifactid>
   <version>1.3.2</version>
  </dependency>

  <dependency>
   <groupid>mysql</groupid>
   <artifactid>mysql-connector-java</artifactid>
   <scope>runtime</scope>
  </dependency>
  <dependency>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-test</artifactid>
   <scope>test</scope>
  </dependency>
  <!--添加jsp依赖 -->
  <dependency>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-tomcat</artifactid>
  </dependency>
  <dependency>
   <groupid>org.apache.tomcat.embed</groupid>
   <artifactid>tomcat-embed-jasper</artifactid>
  </dependency>
 </dependencies>

 <build>
  <plugins>
   <plugin>
    <groupid>org.springframework.boot</groupid>
    <artifactid>spring-boot-maven-plugin</artifactid>
   </plugin>
  </plugins>
 </build>


</project>

三、springboot整合springmvc

因为在创建项目的时候我们选择了mybatis和jdbc所以在这里也要把他们两也给配置进去

编辑application.properties

 

# 页面默认前缀目录
spring.mvc.view.prefix=/web-inf/jsp/
# 响应页面默认后缀
spring.mvc.view.suffix=.jsp

#开发配置
spring.datasource.driverclassname = com.mysql.jdbc.driver
spring.datasource.url = jdbc:mysql://localhost:3306/test?useunicode=true&characterencoding=utf-8
spring.datasource.username = root
spring.datasource.password = 123456

# mybatis接口文件位置
mybatis.mapper-locations: classpath:mapper/*.xml
mybatis.type-aliases-package: com.chaoqi.springboot_demo2.domain

如果大家习惯用application.yml那也可以用，但是用application.yml在第一次启动项目的时候一定要maven clean一下，不然会报错。

server:
 port: 8080

spring:
 mvc:
 view:
  prefix: /web-inf/jsp/
  suffix: .jsp
 datasource:
 url: jdbc:mysql://localhost:3306/test?characterencoding=utf-8&useunicode=true&usessl=false
 username: root
 password: 123456
 driver-class-name: com.mysql.jdbc.driver

mybatis:
 mapper-locations: classpath:mapping/*.xml
 type-aliases-package: com.chaoqi.springboot_demo2.domain

编辑完application.properties之后再src/mian下创建webapp目录，结构如下

新建indexcontroller

package com.chaoqi.springboot_test.web;


import org.springframework.stereotype.controller;
import org.springframework.web.bind.annotation.requestmapping;

@controller
public class indexcontroller {
　　private static final string index = "index";
 @requestmapping("/show")
 public string getindex() {
  return index;
 }
}

运行main函数

访问页面，成功

四、springboot整合mybatis

创建数据库表

-- ----------------------------
-- table structure for music_info
-- ----------------------------
drop table if exists `music_info`;
create table `music_info` (
 `id` int(10) not null auto_increment comment '主键id',
 `singer_name` varchar(100) not null comment '歌手名',
 `music_size` varchar(100) not null comment '歌曲大小',
 `music_name` varchar(100) not null comment '歌曲名',
 primary key (`id`)
) engine=innodb auto_increment=4 default charset=utf8;

-- ----------------------------
-- records of music_info
-- ----------------------------
insert into `music_info` values ('1', '小三', '3.2m', '起风了');
insert into `music_info` values ('2', '刘德华', '3.0m', '忘情水');
insert into `music_info` values ('3', '猪点点', '5.0m', '会写程序的小猪');

创建pojo

 

package com.chaoqi.springboot_test.dao.domain;

public class musicinfo {
 // 主键id
 private integer id;

 // 歌手名
 private string singername;

 // 歌曲大小
 private string musicsize;

 // 歌曲名
 private string musicname;

 /**
  * 获取 主键id music_info.id
  *
  * @return 主键id
  */
 public integer getid() {
  return id;
 }

 /**
  * 设置 主键id music_info.id
  *
  * @param id 主键id
  */
 public void setid(integer id) {
  this.id = id;
 }

 /**
  * 获取 歌手名 music_info.singer_name
  *
  * @return 歌手名
  */
 public string getsingername() {
  return singername;
 }

 /**
  * 设置 歌手名 music_info.singer_name
  *
  * @param singername 歌手名
  */
 public void setsingername(string singername) {
  this.singername = singername == null ? null : singername.trim();
 }

 /**
  * 获取 歌曲大小 music_info.music_size
  *
  * @return 歌曲大小
  */
 public string getmusicsize() {
  return musicsize;
 }

 /**
  * 设置 歌曲大小 music_info.music_size
  *
  * @param musicsize 歌曲大小
  */
 public void setmusicsize(string musicsize) {
  this.musicsize = musicsize == null ? null : musicsize.trim();
 }

 /**
  * 获取 歌曲名 music_info.music_name
  *
  * @return 歌曲名
  */
 public string getmusicname() {
  return musicname;
 }

 /**
  * 设置 歌曲名 music_info.music_name
  *
  * @param musicname 歌曲名
  */
 public void setmusicname(string musicname) {
  this.musicname = musicname == null ? null : musicname.trim();
 }

 @override
 public string tostring() {
  return "musicinfo{" +
    "id=" + id +
    ", singername='" + singername + '\'' +
    ", musicsize='" + musicsize + '\'' +
    ", musicname='" + musicname + '\'' +
    '}';
 }
}

创建mapper.xml

<?xml version="1.0" encoding="utf-8"?>
<!doctype mapper public "-//mybatis.org//dtd mapper 3.0//en" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.chaoqi.springboot_test.dao.mapper.musicinfomapper">
 <resultmap id="baseresultmap" type="com.chaoqi.springboot_test.dao.domain.musicinfo">
 <id column="id" jdbctype="integer" property="id" />
 <result column="singer_name" jdbctype="varchar" property="singername" />
 <result column="music_size" jdbctype="varchar" property="musicsize" />
 <result column="music_name" jdbctype="varchar" property="musicname" />
 </resultmap>
</mapper>

创建mapper

package com.chaoqi.springboot_test.dao.mapper;

import com.chaoqi.springboot_test.dao.domain.musicinfo;
import org.apache.ibatis.annotations.resultmap;
import org.apache.ibatis.annotations.select;

import java.util.list;

public interface musicinfomapper {
 @resultmap("baseresultmap")
 @select("select * from music_info")
 list<musicinfo> selectall(musicinfo musicinfo);
}

service接口

package com.chaoqi.springboot_test.service;

import com.chaoqi.springboot_test.dao.domain.musicinfo;
import java.util.list;
public interface musicinfoservice {

 public list<musicinfo> getmusicinfo(musicinfo musicinfo);
}

service实现类

package com.chaoqi.springboot_test.service.impl;

import com.chaoqi.springboot_test.dao.domain.musicinfo;
import com.chaoqi.springboot_test.dao.mapper.musicinfomapper;
import com.chaoqi.springboot_test.service.musicinfoservice;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.stereotype.service;

import java.util.list;

@service
public class musicinfoserviceimpl implements musicinfoservice {

 @autowired
 private musicinfomapper musicinfomapper;

 @override
 public list<musicinfo> getmusicinfo(musicinfo musicinfo) {
  list<musicinfo> musicinfos = musicinfomapper.selectall(null);
  return musicinfos;
 }
}

创建完成后的结构如下

编辑indexcontroller

package com.chaoqi.springboot_test.web;

import com.chaoqi.springboot_test.dao.domain.musicinfo;
import com.chaoqi.springboot_test.service.musicinfoservice;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.stereotype.controller;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.responsebody;

import java.util.list;

@controller
public class indexcontroller {

 private static final string index = "index";
 @autowired
 private musicinfoservice musicinfoservice;

 @requestmapping("/show")
 public string getindex() {
  return index;
 }

 @requestmapping("/music")
 @responsebody
 public list<musicinfo> getmusicinfo(musicinfo musicinfo) {
  list<musicinfo> musicinfolist = musicinfoservice.getmusicinfo(null);
  return musicinfolist;
 }
}

给springboottestapplication类加上注解@mapperscan("com.chaoqi.springboot_test.dao.mapper")

package com.chaoqi.springboot_test;

import org.mybatis.spring.annotation.mapperscan;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.restcontroller;

@springbootapplication
@mapperscan("com.chaoqi.springboot_test.dao.mapper")
public class springboottestapplication {

 public static void main(string[] args) {
  springapplication.run(springboottestapplication.class, args);
 }
}

运行项目，成功，springboot+springmvc+mybatis整合完成（源码下载地址）

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。